Answer:
x = 16
Step-by-step explanation:
the two angles are vertical angles.
vertical angles are equal.
4x - 7 = 3x + 9
subtract 3x from both sides of the
4x - 3x - 7 = 3x + 9 - 3x
x - 7 = 9
add 7 to both sides of the equation
x - 7 + 7 = 9 + 7
x = 9 + 7
x = 16
